KR101541778B1 - Hand pile assembly for dental clinic and hand piece having the same - Google Patents

Abstract

A hand pile assembly for dental treatment includes: a pile; a pile body; and a buffer member. The pile includes metal materials and is in the shape of an awl. The pile body is connected to an end of the pile to reliably fix the pile and has an engaging jaw. The buffer includes: a buffer body in the shape of a hollow cylinder corresponding to the pile body; a mounting groove which is formed on the outer surface of the buffer body to be fixed to the hand pile; and a pile fixing unit which is formed on the buffer body to be fixed by the engaging jaw. The buffer unit is detachably coupled to the pile body. Accordingly, the hand pile can prevent the pile fracture.

Description

HAND PILE ASSEMBLY FOR DENTAL CLINIC AND HAND PIECE HAVING THE SAME BACKGROUND OF THE INVENTION 1. Field of the Invention [0001]

The present invention relates to a hand file assembly for dental treatment and a handpiece having the same. More particularly, the present invention relates to a hand file for dental treatment in which breakage of a file is prevented, and a dental treatment method in which a file is broken, For example.

Dental treatment includes various treatment fields such as cavity treatment, gum treatment, orthodontic treatment, and jaw joint treatment. Among them, the cavity treatment includes a step of removing cavities formed in the hard teeth and filling the removed sites with resin, amalgam, and the like.

In tooth decay, if the degree of dental caries is severe, the nerve tissue in the root canal of the tooth is irritated and suffered severe toothache. In this case, the dental treatment handpiece is used to scrape the inflamed nerve, fill it with amalgam, and put a gold crown on the outside of the tooth.

The root canal of the tooth has a very deep and thin structure. Thus, the dental treatment handpiece includes an elongated engine pawl for scraping the inside of the root canal.

However, since the structure of the engine file is thin and long, an accident that the engine file is broken during the treatment is apt to occur. It is extremely difficult to remove broken engine file pieces, especially since most of the engine files are located deep inside the root canal at the time of the fracture.

Recently, an attempt has been made to remove broken engine file pieces using a microscope and the like, but the difficulty of the procedure is extremely difficult and the degree of damage to the teeth is increased in the removal process.

Since the frequency of use of engine files is very high in dental treatment, accidents caused by broken engine files are also occurring very frequently.

SUMMARY OF THE INVENTION Accordingly, the present invention has been made keeping in mind the above problems occurring in the prior art, and an object of the present invention is to provide a hand file for dental treatment in which a file is prevented from being broken.

Another object of the present invention is to provide a dental treatment handpiece including a dental treatment hand file, and a dental treatment handpiece in which the file is prevented from being broken even when the rotational direction is varied.

According to an embodiment of the present invention, a dental treatment hand file assembly includes a file, a file body, and a buffer member. The pile comprises a metal and has an awl shape. The file body is connected to an end portion of the file to firmly fix the file, and a latch jaw is formed. The cushioning member may include a cushioning body having a hollow cylindrical shape corresponding to the punching body, a mounting groove formed on an outer side surface of the cushioning body and fixed to the hand file, and a fitting member formed in the cushioning body, And is detachably coupled to the file body.

In an embodiment, the pawl fixing portion may include a latching hook protruding from the inner space of the buffering body and hooked on the latching jaw.

In one embodiment, the buffer member comprises any one selected from the group consisting of synthetic resin, rubber and metal, and the pile may comprise a Ni-Ti engine file.

According to another aspect of the present invention for realizing the object of the present invention, a handpiece includes a body, a power conversion member, a composite motion part, and a hand file. The body includes a power section for generating a rotational power, a power transmission shaft for transmitting the rotational power, and a body outer wall for covering the power section and the power transmission shaft. The power conversion member converts the rotational force transmitted from the power transmission shaft into a complex motion including a repeated rotation in the left and right directions. And the complex motion part vibrates using the complex motion transmitted from the power conversion member. The hand file includes a file having a metal shape and having an awl shape, a file body connected to an end of the file to firmly fix the file and having a stop jaw, and a hollow cylindrical shape corresponding to the file body A buffering body formed on the outer side surface of the cushioning body and fixed to the complex motion part, and a pile fixing part formed in the cushioning body and fixed to the cushioning jaw, Member, and oscillates according to the compound movement.

In one embodiment, the power conversion member may further include an eccentric cam connected to the power transmission shaft, and the composite motion unit may further include a cam guide for converting the rotation of the eccentric cam into the composite motion.

In one embodiment, the power conversion member may further include an eccentric bearing arranged in a ring shape along an outer circumferential surface of the eccentric cam.

In one embodiment, the power conversion member is disposed between the power transmission shaft and the body outer wall, and includes a through hole through which the power transmission shaft passes to guide the relative movement between the power transmission shaft and the body outer wall And may further include a power adjustment guide.

In one embodiment, the through hole of the power adjustment guide may be circular.

In one embodiment, the complex motion may further include a vertical reciprocating motion based on the axial direction of the complex motion part.

In one embodiment, the through hole of the power adjustment guide may have a slit shape extending in the longitudinal direction.

In one embodiment, the power conversion member is disposed on the same axis as the power adjustment guide and has an extended slit-shaped through-hole. When the slit shape matches the slit shape of the power adjustment guide, When the slit shape does not coincide with the slit shape of the power adjustment guide, the compound movement is moved in the direction of the axis of the composite movement part, And further includes a mode switching guide for adjusting the movement so as to further include a motion to repeatedly reciprocate up and down with reference to the direction.

According to the present invention as described above, the power conversion member converts the rotational force into a combined motion including a repeated rotation in the left and right direction and a repeatedly reciprocating motion in the up and down direction, so that the rotational force is prevented from accumulating in the file.

Also, when a sudden impact is applied to the hand file, the buffer member and the eccentric bearing absorb the shock and the pressure applied to the hand file is reduced. Furthermore, the power conversion member includes an eccentric bearing and the power conversion efficiency is increased.

Furthermore, even if the size of the file body changes, the shape of the hand file assembly may be the same if the shape of the buffer member is changed. Therefore, a hand file having various shapes and sizes can be used for one handpiece.

Further, a slit in a vertical direction is formed in the power adjustment guide, and a power transmission shaft passes through the slit. Further, the power transmitting member includes a mode switching guide, and various types of driving are possible. Therefore, the power converting member converts the rotational force into a motion that repeatedly rotates in the left and right directions, so that the rotational force is prevented from accumulating in the file.

Further, when vertical pressure is applied to the hand file, the power transmission shaft moves in the vertical direction through the slit of the power adjustment guide to disperse the pressure.

Thus, the breakage of the hand file is prevented.

1 is a perspective view illustrating a handpiece according to an embodiment of the present invention.
FIG. 2 is a cross-sectional view of the handpiece shown in FIG. 1. FIG.
3 is a perspective view showing the hand file shown in FIG.
4 is a perspective view showing the buffer member shown in Fig.
5 is a perspective view showing the pile fixing portion shown in Fig.
6A and 6B are cross-sectional views illustrating a method of coupling a hand file into a cushioning member.
7 is a cross-sectional view showing the power conversion member shown in Fig.
8 is a perspective view showing the power conversion member shown in Fig.
Figs. 9A, 10A, 11A, and 12A are plan views showing the method of driving the handpiece shown in Fig.
9B, 10B, 11B, and 12B are front views showing a method of driving the handpiece shown in FIG.
13 is a cross-sectional view illustrating a handpiece according to another embodiment of the present invention.
14 is a perspective view showing the power conversion member shown in Fig.
Figs. 15A, 16A, 17A, and 18A are plan views showing a method of driving the handpiece shown in Fig.
Figs. 15B, 16B, 17B and 18B are front views showing the driving method of the handpiece shown in Fig.
19 is a cross-sectional view illustrating a handpiece according to another embodiment of the present invention.
20A and 20B are perspective views showing the power conversion member shown in Fig.

While the present invention has been described in connection with what is presently considered to be the most practical and preferred embodiment, it is to be understood that the invention is not limited to the disclosed embodiments. It is to be understood, however, that the invention is not intended to be limited to the particular forms disclosed, but on the contrary, is intended to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention. Like reference numerals are used for like elements in describing each drawing. The terms first, second, etc. may be used to describe various components, but the components should not be limited by the terms.

The terms are used only for the purpose of distinguishing one component from another. The terminology used in this application is used only to describe a specific embodiment and is not intended to limit the invention. The singular expressions include plural expressions unless the context clearly dictates otherwise.

In the present application, the term "comprises" or "comprising ", etc. is intended to specify that there is a stated feature, figure, step, operation, component, But do not preclude the presence or addition of one or more other features, integers, steps, operations, components, parts, or combinations thereof.

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Terms such as those defined in commonly used dictionaries are to be interpreted as having a meaning consistent with the contextual meaning of the related art and are to be interpreted as either ideal or overly formal in the sense of the present application Do not.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a perspective view illustrating a handpiece according to an embodiment of the present invention, and FIG. 2 is a cross-sectional view illustrating the handpiece shown in FIG. 1. Referring to FIG.

Referring to FIGS. 1 and 2, a handpiece 500 includes a body 100, a power conversion member 200, a complex motion unit 300, and a hand file assembly 400.

The body 100 generates rotational power and transmits it to the power conversion member 200.

The body 100 includes a body outer wall 110, a restraining bearing 115, a power unit 120, and a power transmission shaft 150. In the present embodiment, the body 100 is formed with a bent portion at the center to facilitate gripping, and further includes a rotation connection portion 160 at the bent portion. For example, the rotating connection portion 160 may include various structures such as gears, connection rings, and the like.

The body outer wall 110 covers the outside of the body 100 to protect the inside of the body from external impacts or foreign matter. For example, the body outer wall 110 includes a hard material such as plastic, metal, or the like. In another embodiment, a rubber cover, a projection, a groove, or the like may be disposed on the body outer wall 110 to facilitate gripping.

The power unit 120 generates a rotational force by an external force such as electricity or physical force. In this embodiment, the power unit 120 includes an electric motor. In other embodiments, the power section 120 may include a passive motor.

The power transmission shaft 150 transmits the rotational force generated by the power unit 120 to the power conversion member 200. In this embodiment, the power transmission shaft 150 includes a cylindrical metal rod. In another embodiment, the power transmission shaft 150 may be resilient to absorb shocks that flow back from the hand file assembly 400.

The restraining bearing 115 is disposed between the power transmission shaft 150 and the body outer wall 110 to support the power transmission shaft 150. In this embodiment, the body 100 includes two constraining bearings 115, each of which includes a power coupling 120 and a rotation coupling 160, and a coupling between a rotation coupling 160 and the power conversion member 200 Respectively.

3 is a perspective view showing the hand file shown in FIG.

1 to 3, the hand file of the hand file assembly 400 includes a file body 410, a file 420, and a buffer member 450.

The file body 410 firmly holds the file 420 and has a cylindrical shape. An engagement protrusion 415 is formed on the upper portion of the file body 410. In this embodiment, the latching jaw 415 is formed on one side of the end side of the pawl body 410. In another embodiment, the latching jaw 415 may include a groove (not shown) formed along the circumferential direction on the end side of the pile body 410.

The file 420 has an awl shape and is thinner than the file body 410. In this embodiment, file 410 includes a Ni-Ti file. In another embodiment, the file 410 may comprise a stainless file.

The file 420 includes a working portion 424 and a support portion 422. The working portion 424 is tapered toward the end, and various grooves or projections such as a spiral, a straight line, and a saw tooth are caught in the middle. The support portion 422 is connected to the end of the work portion 424 and is coupled to the pile body 410.

FIG. 4 is a perspective view showing the cushioning member shown in FIG. 1, and FIG. 5 is a perspective view showing a pile fixing unit shown in FIG.

1 to 5, the buffer member 450 is engaged with the file body 410 of the hand file and inserted into the complex motion part 300.

The buffer member 450 has a hollow cylindrical shape. The buffer member 450 is detachably coupled to the pawl body 410. In this embodiment, the cushioning member 450 includes various materials such as synthetic resin, rubber, and metal, and the size of the internal space is changed according to the size of the pile body 410.

The inner space of the buffer member 450 includes a file insertion port 452 and a file output port 454. The file 420 of the hand file and the file body 410 are inserted in order through the file insertion port 452 and only the file 420 is exposed to the outside through the file exit 454. [

The cushioning body 457 of the cushioning member 450 includes a mounting groove 459 and a catching hook 455a. The mounting groove 459 is formed on the outer surface of the cushioning body 457 and is coupled to the complex motion portion 300. The fixed ball 335 whose position is changed by the fixing spring 337 can be inserted into the mounting groove 459 so that the cushioning member 450 can be fixed within the complex motion part 300. [

The file fixing part 455 is formed on the buffering body 457 to fix the file body 410. [

In this embodiment, the file fixing portion 455 includes a hook 455a protruding into the inner space of the buffer member 450. [ The hooking hook 455a is formed at the end of the buffer member and protrudes toward the inner space to be deficient in the hooking protrusion 415 of the pawl body 410. [

6A and 6B are cross-sectional views illustrating a method of coupling a hand file into a cushioning member.

1 to 6A, a working portion 424, a supporting portion 422 and a file body 410 of a file 420 are first inserted in order through a file insertion port 452 of a buffer member 450.

At this time, the working portion 424 and the supporting portion 422 of the file 420 are sequentially exposed through the file exit 454.

1 to 6B, when the file body 410 is completely inserted into the inner space of the buffer member 450, the hook 455a is caught by the hooking jaw 415 of the file body 410. As shown in FIG. Thus, the hand file assembly 400 is assembled.

In this embodiment, in the assembling process of the hand file assembly 400, the hooking jaw 415 of the file body 410 is oriented so as to be disposed at the same position as the hooking hook 455a of the file fixing portion 455 . In another embodiment, the latching jaws 415 of the pivoting body 410 are formed identically in the 360 degree direction along the circumferential direction of the pivoting body 410 so that they can be engaged by the latching hook 455a regardless of the direction have.

7 is a cross-sectional view showing the power conversion member shown in Fig. 1, and Fig. 8 is a perspective view showing the power conversion member shown in Fig.

Referring to FIGS. 1, 2, 7, and 8, the power conversion member 200 converts the rotational force transmitted from the power transmission shaft 150 into a combined motion. In the present embodiment, the complex motion that is converted by the power conversion member 200 is repeatedly rotated in the left and right directions (i.e., clockwise and counterclockwise) with respect to the axis of the complex motion unit 300, And reciprocatingly reciprocating up and down with respect to the axial direction of the shaft.

The power conversion member 200 includes an eccentric cam 210, an eccentric bearing 220, and a power adjustment guide 230.

The eccentric cam 210 is coupled to the power transmission shaft 150 to eccentrically rotate. For example, the eccentric cam 210 has a disc shape. The center axis RA of the power transmission shaft 150 is spaced apart from the center axis CL of the eccentric cam 210 by a predetermined distance D in this embodiment. When the power transmitting shaft 150 rotates, the eccentric cam 210 rotates eccentrically by a predetermined distance D along the power transmitting shaft 150. In this embodiment, the eccentric cam 210 rotates integrally with the power transmitting shaft 150. [

The eccentric bearings 220 are arranged in a ring shape along the outer peripheral surface of the eccentric cam 210. The eccentric bearing 220 reduces the frictional force of the outer peripheral surface of the eccentric cam 210, thereby improving power transmission efficiency. In addition, when an impact is applied to the file 420, the eccentric bearing 220 absorbs a portion of the impact to prevent the file 420 from being broken.

 The power control guide 230 is disposed between the power transmission shaft 150 and the body outer wall 110 to guide relative movement between the power transmission shaft 150 and the body outer wall 110. In this embodiment, the power regulating guide 230 has a disk shape and a circular through hole is formed at the center. When the relative position of the power transmission shaft 150 is fixed by the power control guide 230, the eccentric cam 210 rotates eccentrically by a predetermined distance D,

Figs. 9A, 10A, 11A and 12A are plan views showing the driving method of the handpiece shown in Fig. 1, and Figs. 9B, 10B, 11B and 12B show the driving method of the handpiece shown in Fig. Fig.

Referring to FIGS. 1, 2, 7 to 9A and 9B, when the power transmitting shaft 150 rotates clockwise (R) and the eccentric cam 210 is also eccentric by a predetermined distance D Turn clockwise. When the eccentric cam 210 is rotated in the clockwise direction while being eccentrically rotated, the cam portion 340 rotates counterclockwise (refer to FIG. 9A) while the vibrating portion 330 moves upward Reference).

Referring to FIGS. 1, 2, 7 to 10A and 10B, when the power transmission shaft 150 rotates clockwise continuously, the eccentric cam 210 is also rotated clockwise Direction. When the eccentric cam 210 is continuously rotated in the clockwise direction while being eccentric, the cam guide 340 continues to move upward until the vibrating portion 330 reaches the apex (see FIG. 10B) (NC, see Fig. 10A).

Referring to FIGS. 1, 2, 7 to 11A and 11B, when the power transmission shaft 150 rotates clockwise continuously, the eccentric cam 210 is also rotated clockwise Direction. When the eccentric cam 210 is continuously rotated in the clockwise direction in the state of eccentric cam 210, the vibration guide 330 starts to move downward (see L, FIG. 11B) by the cam guide 340 and starts rotating in the clockwise direction (C, see Fig. 11A).

Referring to FIGS. 1, 2, 7 to 12A and 12B, when the power transmission shaft 150 rotates clockwise continuously, the eccentric cam 210 is also eccentrically rotated by a predetermined distance D Direction. When the eccentric cam 210 is continuously rotated in the clockwise direction while being eccentric, the cam guide 340 continues to move downward (see FIG. 12B) until the vibrating portion 330 reaches the bottom point (C, see Fig. 12A).

Therefore, while the eccentric cam 210 rotates 360 degrees, the vibration unit 330 reciprocally vibrates in a clockwise direction (C) and a counterclockwise direction (NC) when seen from the plane, and when viewed from the front, To perform reciprocating oscillation.

Referring again to FIG. 2, the compound motion of the vibration unit 330 is transmitted to the hand file assembly 400 coupled to the vibration unit 330. Thus, the hand file assembly 400 performs the complex motion.

According to the present embodiment as described above, the power conversion member 200 converts the rotational force into a combined motion including a repeated rotation in the left and right direction and a repeatedly reciprocating motion in the up and down direction, so that the rotational force is accumulated in the file 420 Is prevented.

Also, when a sudden impact is applied to the hand file 420, the cushioning member 450 and the eccentric bearing 220 absorb the shock and the pressure applied to the hand file 420 decreases.

Thus, the breakage of the hand file 420 is prevented. Further, even if the size of the file body 410 changes, the shape of the buffer member 450 is changed so that the external shape of the hand file assembly 400 becomes the same. Therefore, a hand file having various shapes and sizes can be used for one handpiece 500.

Further, the efficiency of the power conversion member 200 including the eccentric bearing 220 is increased.

FIG. 13 is a sectional view showing a handpiece according to another embodiment of the present invention, and FIG. 14 is a perspective view showing the power conversion member shown in FIG. In the present embodiment, the remaining components except for the power conversion member are the same as those in the embodiment shown in Figs. 1 to 8, and thus duplicated description will be omitted.

13 and 14, the handpiece 500 includes a body 100, a power conversion member 1200, a composite motion unit 300, and a hand file assembly 400. [

The power converting member 1200 converts the rotational force transmitted from the power transmitting shaft 150 into a combined motion. In the present embodiment, the double-acting motion converted by the power conversion member 1200 includes only the motions of repeatedly rotating in the left and right directions (i.e., clockwise and counterclockwise) with respect to the axis of the composite motion unit 300. [

The power conversion member 1200 includes an eccentric cam 210, an eccentric bearing 220, and a power adjustment guide 1230.

 The power adjustment guide 1230 is disposed between the power transmission shaft 150 and the body outer wall 110 to guide the relative movement between the power transmission shaft 150 and the body outer wall 110. In this embodiment, the power regulating guide 1230 has a disc shape and a slit-shaped through hole extending in the longitudinal direction is formed at the center. The relative position of the power transmitting shaft 150 in the transverse direction is fixed by the power adjusting guide 1230, but the relative position in the longitudinal direction is not fixed. Accordingly, the eccentric cam 210 rotates eccentrically by a predetermined distance D, but the rotational force is transmitted only in the lateral direction.

Figs. 15A, 16A, 17A and 18A are plan views showing a method of driving the handpiece shown in Fig. 13, and Figs. 15B, 16B, 17B and 18B show a method of driving the handpiece shown in Fig. Fig.

Referring to FIGS. 13, 14, 15A and 15B, when the power transmitting shaft 150 rotates clockwise (R), the eccentric cam 210 is also eccentric by a predetermined distance (D) Rotate. When the eccentric cam 210 is rotated in a clockwise direction in a state of eccentricity, the vibration guide 330 rotates counterclockwise by the cam guide 340 (NC, see Fig. 15A).

At this time, when the eccentric cam 210 is rotated in a clockwise direction with the eccentric cam 210 being eccentric, the power transmitting shaft 150 moves downward along the power adjusting guide 1230, and the vibrating unit 330 itself is moved up and down (See Fig. 15B).

Referring to FIGS. 13, 14, 16A and 16B, when the power transmission shaft 150 rotates clockwise continuously, the eccentric cam 210 also continues clockwise in a state of eccentricity by a predetermined distance D Rotate. When the eccentric cam 210 continues to rotate clockwise while being eccentrically rotated, the vibration guide 330 continuously rotates in the counterclockwise direction by the cam guide 340 (NC, see Fig. 16A).

At this time, when the eccentric cam 210 is rotated in the clockwise direction with the eccentric cam 210 being eccentrically rotated, the power transmission shaft 150 moves downward until reaching a low point along the power adjustment guide 1230, The vertical movement is not performed (see Fig. 16B).

13, 14, 17A and 17B, when the power transmission shaft 150 rotates clockwise continuously, the eccentric cam 210 is also eccentric by a predetermined distance D and continues clockwise Rotate. When the eccentric cam 210 continues to rotate in the clockwise direction in the eccentric state, the eccentric cam 210 starts rotating clockwise by the cam guide 340 (see Fig. 17A).

At this time, when the eccentric cam 210 rotates clockwise in the state of eccentricity, the power transmission shaft 150 moves upward along the power adjustment guide 1230 and the vibration unit 330 itself moves up and down (See Fig. 17B).

Referring to FIGS. 13, 14, 18A and 18B, when the power transmission shaft 150 rotates clockwise continuously, the eccentric cam 210 also continues clockwise in a state of being eccentric by a predetermined distance D Rotate. When the eccentric cam 210 is continuously rotated in the clockwise direction with the eccentric cam 210 being eccentric, the vibration guide 330 continuously rotates in the clockwise direction by the cam guide 340 (see Fig. 18A).

At this time, when the eccentric cam 210 rotates clockwise in the eccentric state, the power transmitting shaft 150 moves upwards until reaching a vertex along the power adjusting guide 1230, and the vibrating unit 330 itself The vertical movement is not performed (see Fig. 18B).

Therefore, while the eccentric cam 210 rotates 360 degrees, the vibration unit 330 reciprocally vibrates in a clockwise direction (C) and a counterclockwise direction (NC) when viewed in a plan view. When viewed from the front, .

Referring again to FIG. 13, the compound movement of the vibration unit 330 is transmitted to the hand file assembly 400 coupled to the vibration unit 330. Accordingly, the hand file assembly 400 performs the vibration motion.

According to this embodiment, the slit in the vertical direction is formed in the power adjustment guide 1230, and the power transmission shaft 150 passes through the slit. Therefore, the power conversion member 200 converts the rotational force into a motion that repeatedly rotates in the leftward and rightward directions, so that the rotational force is prevented from accumulating in the file 420. [

Further, when a vertical pressure is applied to the hand file 420, the power transmitting shaft 150 moves in the vertical direction through the slit of the power adjusting guide 1230 to disperse the pressure.

Thus, the breakage of the hand file 420 is prevented.

FIG. 19 is a sectional view showing a handpiece according to another embodiment of the present invention, and FIGS. 20A and 20B are perspective views showing the power conversion member shown in FIG. 19. FIG. In this embodiment, the remaining components except for the power conversion member are the same as those in the embodiment shown in Figs. 1 to 18B, so duplicate explanations are omitted.

19 through 20B, the handpiece 500 includes a body 100, a power conversion member 2200, a complex motion unit 300, and a hand file assembly 400.

The power converting member 2200 converts the rotational force transmitted from the power transmitting shaft 150 into a combined motion. In the present embodiment, the driving motions converted by the power conversion member 2200 are different from each other in the first mode and the second mode.

In the first mode, the complex motion converted by the power conversion member 2200 includes only the repetitive rotation in the left and right directions (i.e., clockwise and counterclockwise) with respect to the axis of the complex motion unit 300.

In the second mode, the complex motion converted by the power conversion member 2200 is repeatedly rotated in the left and right directions (i.e., clockwise and counterclockwise) with respect to the axis of the complex motion unit 300, And reciprocatingly reciprocating up and down with respect to the axial direction of the shaft.

The power conversion member 2200 includes an eccentric cam 210, an eccentric bearing 220, a power adjustment guide 1230, and a mode change guide 2230.

Since the power adjustment guide 1230 of this embodiment is the same as the power adjustment guide shown in FIG. 14, the duplicated description will be omitted.

The mode change guide 2230 is disposed between the power transmitting shaft 150 and the body outer wall 110 to guide the relative movement between the power transmitting shaft 150 and the body outer wall 110. The mode change guide 2230 is disposed on the same axis as the power adjustment guide 1230. In the present embodiment, the mode switching guide 2230 has a disk shape, and a slit-shaped through hole extending in the longitudinal direction is formed at the center. The mode change guide 2230 can change the extending direction of the slit by the handle 2230b exposed to the outside of the body outer wall 110. [ The relative position of the power transmitting shaft 150 in the direction different from the slit direction is fixed by the mode switching guide 2230, but the relative position in the slit direction is not fixed.

Therefore, when the slit direction of the mode change guide 2230 is aligned with the slit direction of the power adjustment guide 1230 (the first mode), the power transmission shaft 150 can freely move in one direction, 18b. When the relative position between the power transmitting shaft 150 and the body outer wall 110 is constrained in the case where the slit direction of the mode switching guide 2230 does not coincide with the slit direction of the power adjusting guide 1230 The driving shown in Figs. 9A to 12B is possible.

According to the present embodiment as described above, the power transmitting member 2200 includes the mode change guide 2230, and various types of driving are possible.

According to the present invention as described above, the power conversion member converts the rotational force into a combined motion including a repeated rotation in the left and right direction and a repeatedly reciprocating motion in the up and down direction, so that the rotational force is prevented from accumulating in the file.

Also, when a sudden impact is applied to the hand file, the buffer member and the eccentric bearing absorb the shock and the pressure applied to the hand file is reduced. Furthermore, the power conversion member includes an eccentric bearing and the power conversion efficiency is increased.

Furthermore, even if the size of the file body changes, the shape of the hand file assembly may be the same if the shape of the buffer member is changed. Therefore, a hand file having various shapes and sizes can be used for one handpiece.

Further, a slit in a vertical direction is formed in the power adjustment guide, and a power transmission shaft passes through the slit. Further, the power transmitting member includes a mode switching guide, and various types of driving are possible. Therefore, the power converting member converts the rotational force into a motion that repeatedly rotates in the left and right directions, so that the rotational force is prevented from accumulating in the file.

Further, when vertical pressure is applied to the hand file, the power transmission shaft moves in the vertical direction through the slit of the power adjustment guide to disperse the pressure.

Thus, the breakage of the hand file is prevented.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the present invention as defined by the following claims. It can be understood that it is possible.

The hand file assembly and the handpiece including the same according to the present invention have industrial applicability that can be used for dental treatment, medical use, sculpture, fossil research, and the like.

100: Body 110: Body outer wall
115: restraint bearing 120:
150: Power transmission shaft 160:
200: power conversion member 210: eccentric cam
220: eccentric bearing 230: power adjustment guide
300: composite motion part 310: upper cover
320: rotation support part 330:
340: Cam guide 350: Release button
400: hand file assembly 410: file body
415: Jaw 420: File
450: buffer member 452: file insertion port
454: File exit 455:
455a: Retaining hook 457: Buffer body
459: mounting groove 500: handpiece
2230: Mode switching guide RA: Rotation axis

Claims (11)

A file containing a metal and having an awl shape;
A file body connected to an end of the file to firmly fix the file and form a latching jaw; And
A buffering body having a hollow cylindrical shape corresponding to the file body, a mounting groove formed on an outer side surface of the buffering body and fixed to the hand file, and a file fixing part formed in the buffering body and fixed to the jaw And a cushioning member detachably coupled to the file body. The hand file assembly for dental treatment according to claim 1, wherein the pawl fixing part includes a latching hook protruding into an inner space of the buffering body and hooked to the latching jaw. The hand file assembly for dental treatment according to claim 1, wherein the buffer member comprises any one selected from the group consisting of synthetic resin, rubber and metal, and the file includes a Ni-Ti engine file. A body including a power section for generating a rotational power, a power transmission shaft for transmitting the rotational power, and a body outer wall for covering the power section and the power transmission shaft;
A power converting member for converting a rotational force transmitted from the power transmitting shaft into a combined motion including a repeated rotation in the left and right directions;
A complex motion portion that vibrates using the complex motion transmitted from the power converting member; And
A buffer body having a hollow cylindrical shape corresponding to the file body, a buffer body having a hollow cylindrical shape corresponding to the file body, And a cushioning member formed on the outer side surface of the cushioning body and fixed to the composite motion unit, and a cushioning member formed in the cushioning body and fixed to the cushioning jaw, And a hand file that vibrates according to said complex motion. [5] The apparatus of claim 4, wherein the power conversion member further includes an eccentric cam connected to the power transmission shaft, and the composite motion unit further includes a cam guide for converting the rotation of the eccentric cam into the composite motion. A dental treatment handpiece. The handpiece for dental treatment according to claim 5, wherein the power conversion member further comprises an eccentric bearing arranged in a ring shape along an outer peripheral surface of the eccentric cam. The power transmission apparatus according to claim 4, wherein the power conversion member is disposed between the power transmission shaft and the outer wall of the body, and includes a through hole through which the power transmission shaft passes to guide the relative movement between the power transmission shaft and the outer wall of the body And a power adjustment guide to guide the dental treatment. 8. The handpiece for dental treatment according to claim 7, wherein the through hole of the power adjustment guide is circular. 9. The handpiece for dental treatment according to claim 8, wherein the complex motion further comprises a vertical reciprocating motion based on an axial direction of the complex motion part. The handpiece for dental treatment according to claim 7, wherein the through hole of the power adjustment guide has a slit shape extending in the longitudinal direction. 11. The power transmission apparatus according to claim 10,
And a slit-shaped through hole disposed on the same axis as the power adjustment guide and having an extended slit-like through-hole. When the slit shape matches the slit shape of the power adjustment guide, Only the movement for repeatedly rotating in the left and right directions is made,
Further comprising a mode switching guide for controlling the compound movement to repeatedly reciprocate up and down with respect to the axial direction of the compound movement unit when the slit shape does not coincide with the slit shape of the power adjustment guide Features a dental treatment handpiece.

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